Why office workers endure and come to work even when they are sick

Be patient even when an office worker is sick
Reasons for going to work
(Unit: % plural answer)
Because my boss and co-workers noticed
47.6
Because there is no one to do the work for me
426
I feel more comfortable going to work.
37.5
Because I don’t want to inconvenience other colleagues
35.
Because I don’t want to sound regretful
35.5
There’s so much work to do
33.0
I feel like it will look like an insincere image.
29.5
I think you’ll think it’s a monster
15.9
Because everyone is patient and working hard
15.6
I just have to go to work and go to the hospital.
14.2
Because my boss doesn’t let me rest
9.4
I think it will affect the performance evaluation.
9.2
There is no annual leave left
3.6
etc
21
Source: Employment Porter Saramin